Rolled tooth ratchet bar



7 Nov. 8, 1949 A. w. HUNZ ROLLED TOOTH RATCHET BAR Filed March 8, 1946 Patented Nov. 8, 1949 UNI TED TATFETS rPATlEN 'GF FI CE Rom-mi) TOOTH'RATGHETFBKR hlphonsewsnunz, East omca dlnii.

Application March 8, 194%,Sefia5lNo3652f843 1 ali fllaims. (G1. 14-4575) 2 The present invention relates to elongated :toothed rack 201 ratchet :bar -formed of suitable toot-hed bars or .rods :of vari'an't cross :section steel whichl'has been ihot-rolled :to :the required rolled -from-meta1;in such manner as to be ieeo- :shapesas shovmzinl'Figure '1. The =shape-se1ected nomically-made and yetlrelatively light in cross :iszsuch thatatheweight of'the bar is maintained asectionand'weight withadequatestrmgth. 5 iatiarminimum malne while the strength :andrug- This -inventionis a modifieation efim-y prior-in- :gednessrare'not saori-fioed. ?":Ihe;bar it!) may ihave -vention described in my co-pending--patent app1i- :anfiI beamrcrossisection having a web portion -12 ca'tion Serial Number 423,078 filedi9ecember 15, with relatively :massive flanges -14 and L6. The 1 941 whic'h'mature'd inte Patent #2,397;'9'65 and one flange i4 is provided with a plurality of-iunimy co-pending patent applications Serial W0. iformly spaced iteeth I18. .As may be seen from 652,842Whiehmaturedinto Patent 2;'463;77-1and Figure 2 each :of the teeth 48 preferably ha-s a No. 652,844,--fi1ed' March-8, 4946, now abandoned, flat'top'surlfiaee 32B and copposite :side :surfaces 22 for a rolled toothed bar. :a'nd -ZA "which aare1at=.diferentrang1es to the, plane The subject matter of the present invention of tthe fiange LIA. The :teeth extend transversely is directed to an elongated toothed bar or rod :15 @of the ibaria adis'tanne substantially equal to the which is-of particular-utility in connectionwith transverse dimension aoftheiweb +2. .Theouter pushing and pulling devices, particularly liitextremities, :in the transverse direction, v10f reach ing jacks of the types disclosed in United States :oi the teeth iarezpreferabl-y formed with inclined *Letters Patent 22661760 and 2,361,6ii0. in -de- -sii1es16 and328. vising jacks o'f'the'types'referred to-one *o'i the "The "toothed bar '10 :is formed "by :hot rolling problems encountered is "the"econ0niica1 =m'anu- .a bar :between two rollers. "The =10ne roller enfacture 'of a toothed bar or angle iron. '-It is gageseand supports thetinner sidesandedgesof desired toprovi'de an-an'gle'ironfbarorrodhaving the flange F4 .while the .otherroller engages "the teeth so shaped that when cooperating with a top suri ac'eof the flange 14 wandianpli-es a series ratehetpawl-or other 'element form'inga 'part'of pf projeeti'ons which serve ?to form "the interthe pushing or pulling device, the teeth'will be d'erital spaces betw'een the teeth 18. The iower self-cleaning so'that 'theywill 'not become readily roller -oauses:the metal of lba'r to'rflowiaterally clogged with dirt, scale, rust particles *or other and longitudinally to :form :a series :of uniformly foreign matter which otherwise 'would prevent :and 'loneitudinally:spaoediteeth IBintegraI-of-the proper operation of the ratchet, pawl or other 'bar andz'extendingtransversely thereof.

cooperating element. 1 To facil itate thesrolling'operation and "1130 pre- ,-An-0bject ofthe present invention isto'provide vent irregular elongation of :the' bar, :the interimproved forms of different types oitodthed-bars dental spaces in 5a direction iongitu'dinally "of the orrodswh'ichhave'certainimproved features-and bar fleeing of :a length :at least .two and a half characteristics particularlysuited'for cooperation 3 5 times the maximum :heightdof the teeth. The "with pushing and pulling devices and "lifting rolling operation is furtherlfacilitated :b thedifjacks and which also are economically manu- -'ference between the oazngleszof-thevsidesu and 24 factured. i relativeitoitheiplane .ofzthefflange [-4.

Other aniifurther objects of-the present'invenlnia ilushingzand p l ng apparatusof he yp tion subsequently will become apparent byreier- 4i) refer-r85 o in the ffor p n s, it may be 'enceto thefdllowing "description taken in condesirable 3130 have ithe one side 122 of each of the junction with theaccompanyin drawing wherein teeth Hi8 rat in re a y 15116610 n le h may Figure 1 is a perspective view of a toothed bar e ana proximaltely ninet [degrees :or somewhat embodying the :present invention; greater. Theiangle-ofthe-otherzsidezofthe tooth Figure 2 is a, side iew v43f the bar shown in Z l reTativet/o the horizontal plane preferably is Figure 1,; r v of the order of one hundred twenty degrees or Figure 3 is a cross sectional view of the bar E Byihavingithewnwsideifi of 17118 h as seen in the direction-of the arrows along the 'PB-atit'his increased-angle, the projections on the line "3 3 :of Figure '2; lower rdlier form the inter-dental spaces Figure 4 is a cross sectional view similar to may' clear the formed teeth without undue fric- Eigure=3 illustrating a modification of the tooth tion or distortion-ef the teth.

shape; 7 In practice it has been found convenient to Figure 5 is -a side View similar to Figure v2 of 'iia-veithe niid-points-o'f ad-jaoen-t teeth arrange-d another embodiment; f rom -*onefourth to three-fourths :"o'f an inch Figure 6 is a 'crosssectional view as "seen in apart. The greatest height of the teeth emthe direction of the arrows along the line 6'5 ployedfis-preierably not-merethan three-eigliths of Figure 5; and of an inch and the topef the to'othis preferably Figure '7 is a cross sectional view similar to "oftheorderof oneeighthof an in'dl'i ags measured Figured showing amofli'fi'ed'cross sectional shape. along the "longitudinal aiii's "of the rod. The in- The present invention comprises an elongated 6E) creased spatee hetween-theteeth as eompared to the size and mass of the individual teeth not only facilitates the removal of the inter-dental projections on the lower roller during the rolling operation, but also avoids the possibility of tremendous heat on a small tooth fire cracking the tooth. The increased space between the teeth also makes it possible to form the inter-dental recesses or spaces 30 substantially flat and in a :plane extending longitudinally of the bar. By limiting the transverse dimension of the base of each tooth to substantially the width of the web 12 as measured in the transverse direction there furthermore is avoided any further possibility of introducing undesired distortion of either of the teeth or the length of the bar during rolling operation. The formation of the teeth as projecting members along the bar 15 provides a selfcleaning arrangement which does not readily retain dirt or other foreign matter. Any slight accumulation of foreign matter will cally be cleaned out by the pushing and pulling devices which have a holding pawl or ratchet which effectively cleans or scrapes the interdental surface.

The teeth formed on a bar of the type shownx. 1

in Figures 1 to 3 may have a somewhat different configuration as is apparent from Figure 4 where the \top and the sides of the tooth 32 have a continuous curved configuration. The tooth 32 in other respects may be formed in a manner simi::

lar to the tooth [8 of the preceding figures.

Another embodiment of the invention is illustrated in Figures 5 and 6 where the bar 34 has an I-beam cross section with a relatively heavy web 36 interconnecting two relatively massive;

flanges 38 and 40. The flange 40 during the rolling operation is formed with two longitudinal ridges 42 and 44 arranged on opposite sides of regularly spaced teeth 48. The teeth 08 again preferably have side surfaces arranged at different angles to the horizontal plane of the bar. The teeth 48 in this instance extend a short distance above the longitudinally extending ridges or flanges 44. Thus the teeth in this arrangement are provided with a certain amount of pro- 1 tection and reinforcement, but otherwise the teeth again may be said to project above the surface of the outer plane of the flange 30. The inter-dental spaces 50 are preferably of the same arrangement as the inter-dental spaces 30 of the preceding embodiments.

A still further embodiment of the present invention is shown in Figure 7 where the bar as of a T cross sectional configuration having a web 1 or stem portion 52 and a flange 54. The flange 54 is provided with longitudinally extending ridges 56 and 58 which correspond to the ridges 42 and 44 shown in Figure 6. The teeth 60 are also formed in a manner similar to the teeth 48 of Figure 6. The body 52 as shown may have a somewhat trapezoidal cross section and the maximum transverse dimension of each of the teeth preferably does not exceed the maXimum transverse dimension of the web or beam portion 52.

While for the purpose of illustrating and describing the present invention, certain specific forms have been shown in the drawing, it is to be understood that such other variations are contemplated in accordance with the teachings of the present invention as may be commensurate with the true spirit and scope of the invention defined in the following claims.

This invention is hereby claimed as follows:

1. A rack or ratchet bar of relatively high carbon steel of I beam cross section provided with automati- 1 a relatively large flange having formed thereon spaced apart teeth projecting substantially above the outer plane surface of the flange, said teeth being spaced at intervals not more than A of an inch apart and the height of a tooth being 2% times less than the distance of the bottom of an interdental recess in a direction longitudinally of the bar.

2. A toothed bar of I beam cross section having a heavy transverse flange provided with transversely arranged spaced apart teeth separated by inter-dental recesses having substantially flat bottoms and having longitudinal dimensions two and one half times greater than the height of the teeth, said teeth projecting from the adjacent plane surface of the flange.

3. A toothed bar comprising a steel beam having an I cross sectional configuration and having integrally teeth projecting from the outer plane surface of one of the flanges, said teeth having opposite sides at different angles to the longitudinal plane of the bar and having dimensions transversely of the bar of the order of the transverse dimension of the web of the I beam.

4. A toothed bar of I beam cross section having relatively heavy transverse flanges, one of said flanges being provided with transversely arranged spaced apart teeth separated by interdental recesses having substantially flat bottoms and having a length greater than two and one half times the height of the teeth.

5. A toothed bar of I beam cross section having a relatively large flange having integral teeth formed therein at uniform intervals of at least two and a half times the height of each tooth, each tooth on opposite sides being at different angles to the longitudinal plane of the bar, the base dimension of each tooth being of the order of the transverse dimension of the beam.

6. A toothed bar of I beam cross section having transverse flanges one of which has formed thereon transversely arranged spaced apart teeth having a transverse dimension of the order of the transverse dimension of the web of the bar, said teeth being separated by inter-dental recesses having substantially flat bottoms and having lengths of at least two and a half times the height of each tooth, one side of each tooth being at substantially ninety degrees to the plane of the outer surface of the bar, and the opposite side of each tooth being at an obtuse angle to the outer surface of the bar, each tooth projecting outwardly above the plane outer surface of the bar.

ALPI-IONSE W. HUNZ.

REFERENCES CITED The following references are of record in the 

